Hongfa industrial relays and supporting products are widely used in industrial PLC and auxiliary instrumentation, machine tools and industrial machinery and equipment, elevators (escalators, passenger elevators), frequency converters, industrial safety circuit control, signal line switching control, power control and other occasions, to meet the industrial control of various types of loads under the different control requirements. Hongfa's industrial relays include intermediate relays, power relays, forced guided relays, PLC and control panel relays, solid state relays and other categories.